diff --git a/wagtail/tests/settings.py b/wagtail/tests/settings.py
index e9131526e..39705e0b1 100644
--- a/wagtail/tests/settings.py
+++ b/wagtail/tests/settings.py
@@ -4,6 +4,7 @@ import os
 
 import django
 
+DEBUG = False
 WAGTAIL_ROOT = os.path.dirname(os.path.dirname(__file__))
 STATIC_ROOT = os.path.join(WAGTAIL_ROOT, 'tests', 'test-static')
 MEDIA_ROOT = os.path.join(WAGTAIL_ROOT, 'tests', 'test-media')
@@ -54,7 +55,7 @@ TEMPLATES = [
                 'wagtail.tests.context_processors.do_not_use_static_url',
                 'wagtail.contrib.settings.context_processors.settings',
             ],
-            'debug': True,
+            'debug': False,
         },
     },
     {